Vintage E.R. Watts & Son Ltd. London Surveyor’s Abney Level – No. 50855 (c.1930s–40s)

Vintage E.R. Watts & Son Ltd. London Surveyors Abney Level c.1930s40s

• Serial No.: 50855
• Period: Circa 1930s1940s (pre-Hilger & Watts era)
• Construction: Black-enameled metal frame with brass fittings and vernier scale
• Features: Adjustable spirit level, fine micrometer screw, sighting eyepiece, and engraved degree scale (0°90°)
• Includes: Original brown leather case with press-stud closure and hand stitching

Historical Background

E.R. Watts & Son was one of Britains most respected makers of optical and surveying instruments, supplying the Royal Engineers, civil surveyors, and mapping departments across the British Empire.
This Abney Level was used to measure slopes, gradients, and elevations in the fieldan essential tool for engineers, foresters, and military topographers of the era.

Condition

• Mechanically sound and complete.
• Original patina with minor age-related wear.
• Bubble level intact.
• Case shows gentle use consistent with age.

Collectors Note